The Titius-Bode law for planetary distances is reviewed. A model describing the basic features of this law in the ”quantum-like” language of a wave equation is proposed. Some considerations about the ’t Hooft idea on the quantum behaviour of deterministic systems with dissipation are discussed.

| In this paper, we revisit the well-known robustness properties of the linear quadratic regulator (LQR), namely, the guaranteed gain margin of-6 to +1 dB and phase margin of ?60 o to +60 o for single-input systems. We caution that these guaranteed margins need to be carefully interpreted. More speciically, we show via examples that an LQR may have a very small margin with respect to the variat...

The development of realistic predictions to assist the power supply engineer during the control loop design process is facilitated in this application report by appropriate small-signal and bode plot analysis, the validity of which is verified through simulation results.

In the paper a remote lab experiment RC oscillator used to support Web based learning, to support learning by doing, to learn control design and to minimize the gap between theory and practice is presented. The experiment was designed with a special care for visualisation of important control design parameters in Bode plot and Root-Locus diagram. The experiment is based on MATLAB, LABview and D...